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@ARTICLE{Harder:605555,
author = {Harder, Constantin and Betker, Marie and Alexakis,
Alexandros and Bulut, Yusuf and Sochor, Benedikt and
Soederberg, Daniel and Malmstroem, Eva and
Mueller-Buschbaum, Peter and Roth, Stephan},
title = {{P}oly(sobrerol methacrylate) {C}olloidal {I}nks {S}prayed
onto {C}ellulose {N}anofibril {T}hin {F}ilms for
{A}nticounterfeiting {A}pplications},
journal = {ACS applied nano materials},
volume = {7},
number = {9},
issn = {2574-0970},
address = {Washington, DC},
publisher = {ACS Publications},
reportid = {PUBDB-2024-01506},
pages = {10840-10851},
year = {2024},
note = {I-20010005},
abstract = {The colloidal layer formation on porous materials is a
crucial step for printing and applying functional coatings,
which can be used to fabricate anticounterfeiting paper. The
deposition of colloidal layers and subsequent thermal
treatment allows for modifying the hydrophilicity of the
surface of a material. In the present work, wood-based
colloidal inks are applied by spray deposition on
spray-deposited porous cellulose nanofibrils (CNF) films.
The surface modification by thermal annealing of the
fabricated colloid-cellulose hybrid thin films is
investigated in terms of layering and hydrophobicity. The
polymer colloids in the inks are core–shell nanoparticles
with different sizes and glass transition temperatures
(T$_g$), thus enabling different and low thermal treatment
temperatures. The ratio between the core polymers,
poly(sobrerol methacrylate) (PSobMA), and poly(-butyl
methacrylate) (PBMA) determines the T$_g$ and hence allows
for tailoring of the T$_g$. The layer formation of the
colloidal inks on the porous CNF layer depends on the
imbibition properties of the CNF layer which is determined
by their morphology. The water adhesion of the CNF layer
decreases due to the deposition of the colloids and thermal
treatment except for the colloids with a size smaller than
the void size of the porous CNF film. In this case, the
colloids are imbibed into the CNF layer when T$_g$ of the
colloids is reached and the polymer chains transit in a
mobile phase. Tailored aggregate and nanoscale-embedded
hybrid structures are achieved depending on the colloid
properties. The imbibition of these colloids into the porous
CNF films is verified with grazing incidence small-angle
X-ray scattering. This study shows a route for tuning the
nanoscale structure and macroscopic physicochemical
properties useful for anticounterfeiting paper.},
cin = {FS-SMA / DOOR ; HAS-User / FS-PETRA-D},
ddc = {540},
cid = {I:(DE-H253)FS-SMA-20220811 / I:(DE-H253)HAS-User-20120731 /
I:(DE-H253)FS-PETRA-D-20210408},
pnm = {632 - Materials – Quantum, Complex and Functional
Materials (POF4-632) / 6G3 - PETRA III (DESY) (POF4-6G3) /
DFG project 390776260 - EXC 2089: e-conversion (390776260) /
FS-Proposal: I-20191361 EC (I-20191361-EC)},
pid = {G:(DE-HGF)POF4-632 / G:(DE-HGF)POF4-6G3 /
G:(GEPRIS)390776260 / G:(DE-H253)I-20191361-EC},
experiment = {EXP:(DE-H253)P-P03-20150101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:001227987300001},
doi = {10.1021/acsanm.4c01302},
url = {https://bib-pubdb1.desy.de/record/605555},
}